Currently the ShipStation API will only return label data when the label is created (POST /shipments/createlabel).
It would be very useful for us to be able to pull the label data through the list shipments endpoint (GET /shipments).
As this will increase the amount of data returned by the API, adding a parameter similar to includeShipmentItems would make the labelData field optional. Additionally, it would be important to get label data for multiple orders at the same time to reduce the number of API calls we would need to use. In our use case we search for shipments between a specific shipDateStart and shipDateEnd.